Window-frame.



O. SINGER. wmnow FRAME. APPLIOATION FILED JULY 1 1909.

Patented Nov. 16, 1909.

qWi/Wmeo w W m UNITED sTATEs PATENT OFFICE.

CHARIES SINGER, OF WINFRED, SOUTH DAKOTA.

WINDOW-FRAME.

Specification of Letters Patent.

Patented Nov. 16, 1909.

Application filed July 1, 1909. Serial No. 505,462.

into the frame.

Another object of the invention is to provide an auxiliary window frame,made of a peculiar form, and easily attached to the main window frame.

A still further object of the invention is to provide means to preventthe binding of the window sashes in the frame, such binding being due towarping or swelling of the wood work.

The above and other objects of the invention are attained by themechanism hereinafter fully described and claimed and illustrated in theaccompanying drawings, in which- Figure 1 is a vertical section of awindow frame, showing one of the auxiliary frame, sections in elevation,and with a part thereof swung inwardly as in the position which itoccupies when the sashes are to be removedor replaced; Fig. 2 is atransverse sectional detail taken through the pivoted part of theauxiliary frame, just below the pivot, and also showing fragments ofthe. up er and lower sashes cooperating therewith- .the illustrationbeing viewed from below; Fig. 3 is a detail perspective view of one ofthe side bars of a window sash, and. Fig. 4-. is a modified form ofauxiliary frame.

Throughout. the following description and on the several figures of thedrawings similar parts are referred to by corresponding referencecharacters. l

The window frame 10 is or may be of any usual construction and isadapted to receive upper and lower sashes 11 and 12 for verticalslidable movement therein. In place of the usual stationary guidescooperating with the side members 13 of the window frame, I provide anauxiliary frame or stile comprising an upper stationary section 14,. alower stationary section 15, and an inter:

mediate section 16, pivoted at 17 in sucha manner as to permit the freeend thereof to swing inwardly from the main plane of the window frame.the sections 14 and 16 are preferably formed on complemental curves, thecenter of WlllCll 'is said pivot 17. v

As indicated in Figs. 1 and 2 the auxiliary frame is made of sheetmetal, sta1nped and pressed into a peculiar form in cross sectionindicated in Fig. 2, whereby peculiar guiding means are provided. Anysuitable kind of metal may be employed, but as a suggestion No. 22 gagesheet steel has been found 79 v to be quite advantageous, it beingstrong enough for all practical purposes, and 1s not prohibitive as toweight and cost. The said sheet metal is doubled upon itself between itslateral edges forming a tongue 18.

The metal of the tongue is therefore double for a short distance, theparts of the metal thereafter being single and separate from each other.Said separated parts form at 19 a vertical rib which extends between theso two sashes 11 and 12, and the tongue 18 ex tends inwardly from saidrib substantially parallel with the side wall of the frame 10.

The-two parts of the auxiliary frame extend from the rib 19 in'oppositedirections but in the same plane, and their outer margins are bentupwardly from said plane forming guide members 20 and 21, the extremeedge of the latter, however being agaiii bent inwardly substantially inthe sanie'plane and same direction and forming a tongue 21,substantially similar in effect to the tongue 18 above mentioned. Thetwo sashes are adapted to slide between said rib 19 and the guideflanges or members 20 and 21, respectively. Each of the sash frames isgrooved at 22 to receive the tongues in the manner indicated in Fig. 2,whereby.

, the window is rendered practically air tight or dust proof whenclosed. In order to provide an all metal bearing contact between thesashes and the frame, each,of said sash bars is preferably provided witha plurality of metallic plates 23, each of said plates being a triflelonger than the width of said bar. This construction insures against thebinding of the window sash in the frame due to ordinary swelling ofthewood work. The plates 23 are secured permanent y to the WlIldOW,sash, as by screws 23, an in addition to constituting guiding plates'otiperating with the auxiliary frame they serve to The meeting ends ofstrengthen the Window sash construction and prevent thereby the breakingof the part thereof between the groove 22 and the frame.

The modification shown in Fig. 4 comprises an auxiliary frame 16 adaptedto be secured to the usual frame and to possess the principalcharacteristics of the auxiliary frame above described. iary frame alsoincludesaset of metallic ribs 1%),20 and 21?, secured to the main partof the frame in any suitable manner. lhe rib 19 is provided with a pairof tongues 18 and 21 said tongues just mentioned being adapted tocooperate in grooves in the -respective window sashes in a mannersimilar to the operation above described in connection with Figs. 1 and2. It is to be noted however that in ,this instance the groove 22 wouldbe made on the inner face of the upper sash.

Having thus described the invention in its preferred embodiment, what Iclaim as new and desire to secure by Letters Patent of the United Statesis: I

In combination, a window frame stile The modified auxilcomprising aplurality of members, one of which is pivoted to swing in relation tothe other, and each member constructed of a single sheet of metal andbeing provided with a substantially central rib, ,the metal adjacent tosaid rib forming a tongue eX- tending at right angles to the rib, thelateral edges of the structure being bent upwardly at right angles tothe main portions thereof forming guide flanges, and one of said flangesbeing edge to form a tongue lying in substantially the same plane andextending in the same direction' as the aforesaid tongue, and a pair ofsashes slid-able in said frame, each of said sashes being grooved toreceive one of said tongues and being provided also with metal platescooperating With aforesaid metallic frame, substantially as and for thepurpose set. forth.

In testimony whereof I affix .my signature in presence of two witnesses.

CHARLES SINGER. Witnesses GEO. L. BEELER, ARTHUR L. BRYANT.

further bent at its extreme

